TEST - LED bulb that can replace a 100W incandescent bulb.

Finally, we can offer you an LED bulb that can replace even the most powerful classic 100W bulbs. We have made a simple comparison of the PHILIPS MASTER LEDbulb 20-100W with E27 base with other conventional bulbs and one energy saving bulb.

30.6.2014 | author: Michal Novotný

A few years after the advent of LED technology in the field of light sources for everyday use, the initial euphoria, when everyone imagined that all we had to do was buy LED bulbs, replace them with regular or halogen bulbs and save and save. Led žárovky 100W

The development of LED technology

Especially in areas where higher light outputs are needed, LED technology has lagged behind. Manufacturers have not been able to achieve satisfactory luminous fluxes at low power inputs. Energy saving fluorescent lamps still seemed to be the best choice to replace conventional 60W, 75W and 100W incandescent lamps. The price, as well as the wattage/light output ratio, spoke in favour of energy saving fluorescent lamps. And when the LED bulb with a light output equivalent to a 75W bulb and later a 100W bulb appeared on the market last year, the wattage of the LED bulb equivalent to a 75W bulb was 17W. At that time, an energy-saving bulb/fluorescent lamp had an input of 13W with a comparable light output. This wattage has now been reduced to 13W, and the LED bulb equivalent to a 100W bulb now has a wattage of 20W.

Price development

But the prices of such bulbs used to be around 1600 CZK. Today, thanks to the development of technology, these prices have been reduced to less than half the original price. And it is already worth considering buying them. Especially if you miss the no longer produced classic bulbs 100W, 75W, 60W...

Advantages of LED bulbs

The indisputable advantage of LED bulbs is that they don't mind switching cycles and their rise to full luminosity is within a fraction of a second. Therefore, we don't have to worry about putting them where we don't know in advance how much, how long and how often they will be lit. LED bulbs can also be connected to a motion sensor.

And last but not least, the 25,000 hour lifetime is a great advantage. Here you save on servicing and buying new bulbs and have a guarantee that you will get your investment back.

Test

But there is still the question: does it really light as the manufacturer says? After our market was flooded with cheap LED bulbs from China that did not abound in both performance and durability, skepticism is in order. To be fair, some bulbs are of good quality and deliver what the manufacturer/supplier promises. But 100W?

To see how the PHILIPS MASTER LEDbulb 20-100W shines, we did a simple test. I installed a PHILIPS MASTER LEDbulb 20-100W LED bulb in two side-by-side pendant lights, followed by a row of 100W classic frosted bulbs, 60W, 40W incandescent bulbs and then a 20W energy saving bulb (fluorescent). And then took a picture of both fixtures at the same time. While this simple test doesn't measure the luminosity of the bulbs with laboratory precision, it is possible to get a picture and comparison of how what glows.

Comparison photos. On the left, always Philips Master LEDbulb 20-100W E27. All taken at the same time, aperture and sensitivity settings (1/250 sec, f/16, ISO 800).

The difference in luminosity can be seen mainly at the level of shade illumination.